Radiographic findings can include small "snowflake-like" nodular densities corresponding to areas of alveolar hemorrhage, large confluent consolidations, or a diffuse, ill-defined ground-glass pattern
that may represent resolving hemorrhage.8-11 Serial radiographs may show progression from a nodular pattern to confluent consolidation, as seen in this patient (Figures 2,3).
Although a computerized tomography (CT) scan was not available for our review, a CT is more sensitive than a standard X ray, and we would have expected a characteristic ground-glass pattern
. Diffuse bilateral patchy or ground-glass opacifications are noted in 50-70% of patients with HP (23).